Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8360969 | Securable cannula and method | Bryan T. Hanypsiak, Mark G. Frantz, Mark Williams, Charles P. Chesnes, Paul L. Erickson +3 more | 2013-01-29 |
| 6810559 | Agitator assembly for vacuum cleaner | Richard H. Mertes | 2004-11-02 |
| D478698 | Agitator for a vacuum cleaner | Richard H. Mertes | 2003-08-19 |